"Partners in Crime" is the first episode of the fourth series of the British science fiction television series Doctor Who. It was broadcast on BBC One on 5 April 2008. The episode reintroduced actor and comedian Catherine Tate as the temp Donna Noble, who had previously appeared in the 2006 Christmas Special "The Runaway Bride". In the episode, Donna and the alien time traveller the Tenth Doctor (David Tennant) meet while separately investigating Adipose Industries, a company that has created a revolutionary diet pill. Together, they attempt to stop the death of thousands of people in London after the head of the company, the alien Miss Foster (Sarah Lancashire), creates the Adipose, short white aliens made from human body fat.